dillon



(No Mdel.) v

P. DILLON.

GALENDERING MACHINE.

2 Sheets-#Sheet 1.

nu: nouns man: m.. mo-uma. mmmmmojc.

(No Model.) -2 Sheets-sheet 2-r P. DILLON. CALBNDERING MACHINE.

No. 525,679. Patnted Sept. 4, 1894.

MHWHH 0 m m w h@ Q N@ O n n@ o o NQ www m @u AG o M NQ n@ O Nh@ f en n Nwww N wh. H@ n l i v l l la www UNITED STATES PATENT OFFICE.

PETER DILLON, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO JOHNHENRY HORNE, OF SAME PLACE.

CALE'NDERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent'No. 525,679, datedSeptember 4, 1894. l Application filed .Tune 6, 1892. Serial No.435,604. (No model.)

To all whom t may concern,.-

Be it known that I, PETER DILLoN, a subject of the Queen of GreatBritain, but residing at Lawrence, Essex county, State of Massachusetts,have invented an Improvement in Calend erin g-Machines, of which thefollowing description, in connection with the accompanying drawings, isa specilicatiomlike lettersand figures on the drawings representing likeparts.

This invention is intended as an improvement on that described in myPatent No. 485,534, dated November 1,1892.

In this my present invention I have improved the construction of theguides for directing the free or leading end of the web of paper betweenthe rolls; and have provided means for dampening the web.

Figure 1 in side elevation represents a sufficient portion of acalendering machine to enable my invention to be understood. Fig. 2, isa vertical section on the line :1c-, Fig. 1. Fig. 3, is a lower end viewof the shell Vplate for directing moist air against the web beingcalendered. Fig.4is a sectional elevation of parts of the throat of theshell plate, showing the delivery orifices open. Fig. 5 is a sectionalelevation of parts of the throat of the shell plate, showing the`delivery orices closed. Fig. 6, is a detail looking at the inner sideof the shell plate at its upper end. Fig. 7, is a top or plan view ofthe lever and roll which aid in feeding the end of the web into themachine. Y

The frame work A, the positively rotated bottom roll B and the rolls C,D, E, F, above it one lying on the other and all rotated from the bottomroll, are and may be all as common in calendering machines.

At the top of the frame work I have pivoted at a, 'a lever a having afeeding roll a2 and provided with a counterbalance a3 which normallykeeps the roll a2 lifted from contact with the roll F. The outer end oflever a. supports a spring a4 through which is extended a rod a5connected with a treadle a6 pivoted at a7, and working between two stopsas, a9, the spring a4 being strong enough to sustain the weight of therod and treadle. WVhen it is desired that the roller 0.2 co-operate withthe moving roll F to grasp and feed the end of the web tu into themachine the operator will put his foot on the treadle a6 -and depressthe lever ct', the contact of the roller a.2 with the paper being ayielding one.

a. cross-bar b', provided with a guide b2, and

a finger b3, the latter substantially touching the roll a2 andpreventing any possibility of the leading end of the web getting overthe guide b2.

At one side the calendering machine rolls I have located a blower or fanG which may be of any usual or suitable construction, said fan having aninlet pipe G and a delivery pipe G2. In the inlet Ipipe I have mountedan atomizing or spraying nozzle G3 connected to a pipe G4 having asuitable valve G by which to regulate the quantity of water to besprayed and taken up and held in suspension by the air on its way to theblower.

This invention is not to be limited, however, to the particularconstruction shown for the nozzle or atomizer, as there are numerousdevices for such purpose any one of which may be used to advantage'according to the neness desired for the spray. The water might besprayed directly` upon the paper were it not for the fact that suchspraying cannot divide the particles of water with sufl ticient tinenessto prevent the independent particles dampening the paper in separatedspots, giving to fine grades of paper a pitted appearance, which is veryobjectionable. I have found in practice, however, that by spraying thewater into the current of air first, as described, the air holds thewater in suspension and causes still liner division of the particles,acting as a vehicle therefor, so

that when the moisture laden air, as it may be called, is directedagainst the paper it will be evenly moistened or dampened. The pipe G2standing near the rolls B, C, is in communication with a series ofbranch pipes c, d, e. The pipe c enters loosely, but air tight, 'one endof a shell plate c to the lowerend of which is attached a clearer c2 toco-operate with roll E, the opposite end of the shell plate beingpivoted on the frame work. The lower end of the shell plate has a seriesof holes 2,

see Figs.4 and 5, and cao-operating with this part of theplate is avalve as, shown as a slide bar having a series of holes 3. "When theseholes 2, 3, are in line, the moist air is delivered against the paperlying on the roll D, but when the holes are out of line the outiiow ofmoist air is checked. At its upper end the shell plate has a long slot4, covered by a series of movable valve plates 5, held in adjustedposition by set screws 6, and by adj ustiug these valves to cover,ormore or less uncover said slot 4, more or less air may be dischargedagainst the roll E ata point where the paper is not in contact with it.possible to cool the roll E, for the moisture laden air'coming incontact with the warm roll is partially dried thereby, and consequentlyheat must be abstracted from the roll by the operation.

The pipes d and e are extended across the frame-Work, and each pipe hasa longitudinal slot, see Figs. l and 2, and on these pipes are arrangeda series of throated sleeves d', e', which may be turned on the shaftsto more or less close the slots in the pipes and thus regulate thedischarge of moisture laden air onto the rolls C, B. These throatedsleeves are kept in adjusted position by suitable set screws cl2, e2.The pipes el and e have mounted on them bars d3, cito which areconnected suitable clearers d4, e4. The bars d3, e3 have respectivelyarms d5, e5. The armV d5 has a rod d which is extended through a leverd? pivoted at 7, and through a spring 6. The lower end of the lever Z7is engaged by a weighted latch d8, and while the latch holds the leverthe latter acting on the spring 6, pushes its opposite end against a nuton the rod, and thus keeps the clearer d4 against the roll C, in ayielding manner. The arm e5 is acted upon by one arm of the Weightedlever e6 and thc clearer e4 is kept against roll B in a yielding manner.The roll Fis acted upon by a clearer 8 attached to a bar f mounted on apipe or rod f. This bar, as Well as the shell c has suitable ears toreceive respectively the rock-shafts f2 and c4.

The shaft f2 has two arms f3, f4, the arm f4 being n ormally acteduponand held by a catch f, while the arm f3 receives through it loosely oneend of a spring encircled rod f6 jointed to the bar f having the clearerS, the arm f3 by acting on the spring or rod f keeping the said clearersheld to the roll in a yielding manner.

The rock-shafts f2 and c4 have mounted on them respectively like sleevesm, but one of which is shown fully, viz: in Fig. 1, each sleeve,however, having depending from it a guide-plate as g, h, the said guideplates being represented, see Fig. l, as slotted to present a series offingers and in the slots between these fingers of whatever form, whetheriiat or round in cross-section, are rollers g', h', said rollers beingnormally kept in contact with the rolls of paper being fed through thecalendering machine by Weights as g2, 71,2, con- It is thusY In practicewhenever 4it is desired to turn the clearers away from the rolls, thelatches as at f5, c7, d8, may be turned to release the arms held bythem, and Whenever it is de sired to pull away from the calenderingrolls the guides g, h, to gain access to the paper on the partsV of therolls covered by said guides, this may be easily done by engaging Y theguides by hand and overcoming the weights g2, h2. Y y

The guides g, h, are extended, as shown in the drawings, along but a.portion of the length of the rolls, the guides acting to properlycontrol the paper without being extended throughout the length of therolls.

Viewing Fig. 2 at the left VI have shown only the lower end of a guide nit in practice being supposed to be the same as the guide g immediatelyabove it, but herein I have omitted from the drawing all the remainingportion of the guide for the reason that it will be just the same as theguide g and its supporting parts above it. y

It will be understood in the use of calendering machines for calenderingpaper that the rolls expand inwardly at times and pinch the paper at'some points harder than at others and injure the paper. Y I-Ierein it ispos sible, by means of the air pipe and the blower, and the valves, todeliver the moisture laden Aair which may be more or less cool, directlyupon the warm rolls at such points it is desired to cool, the coolingbeing accomplished vas described, thus overcoming the excessiveexpansion. The paper is readily moistened on both sides during itstravel through the calenderng machine, for as it enters the maj chine itis moistened on its under side by the moisture laden air from pipe f',and on its opposite side by said air from the lower end of shell platec', and also from pipe d, if desired.

In the use of calendering machines it is well known that in dryweatherconsiderable didiculty is experienced by the rapid generation ofelectricity due to friction. I have discovered that this diiculty due toelectricity is completely obviated by the employment of air having wateratomized into it.

Having described my invention, what I claim as new, and desire to secureby Letters calender rolls, each provided with a bar having a clearer,and withl a rock-shaft having arms and a latch to hold the saidrock-shaft in place, and a spring interposed between one arm of the saidrock-shaft and the bar carrying the clearer, substantially as described.

3: The combination with a calender roll of a calendering machine, of aguide partially surrounding the said roll, and a roll carried by saidguide and adapted to contactwith the paper upon the calender roll,substantially as described.

4. The combination with a calender roll of a calendering machine, Ot` ashell plate having an attached clearer to contact with a calenderingroll, and provided with a transverse air delivery passage, and avalvefor said passage to regulate throughout its length the exit of airtherefrom at desired times upon the paper passing over another roll ofthe series of rolls, substantially as described.

5. In a calendering machine, two calender rolls, a hollow 'shell plate,a clearer carried thereby to act against one of the said rolls andvalves connected with said shell plate and adapted to permit the passageof air against one of the said rolls and against the paper passing overanother of said rolls, substantially as described.

6. In a calenderingmachine, a series of calenderrolls, a series of pipesarranged near but parallel to said rolls, and suitable independentdelivery valves for each pipe, wherebyair may be directed upon the rollsat particular points between their ends, combined with a blower, andmeans to discharge water in ne particles into the air going to saidblower, whereby the latter is adapted to blow moisture laden air throughsaid pipes against the paper being calendered, substantially asdescribed.

7. In a calendering machine, the combination with the rolls, ofair-delivery means for each roll, a clearer for each roll and movableindependently of said air-delivery means, and a yielding device to holdeach clearer to its roll, substantially as described.

8. In a calendering machine, the combination with the rolls, of meansfor moistening air, and means for delivering such moisture laden airupon such rolls and upon the paper being calendered, substantially asdescribed. 5o

9. The method of calendering paper consisting in subjecting the paper tothe action of calendering surfaces upon which and the paper a constantsupply of cool moisture laden air is delivered, substantially asdescribed.

l0. In a calendering machine, a calender roll, and a. bar having anattached clearer, combined with a rock-shaft, connections between saidrOck-shaft and bar whereby the latter is normally pressed toward theroll, and means to hold the rock-shaft against rotation, substantiallyas described.

In testimony whereof I, have signed my name to this specification in thepresence of two subscribing witnesses.

PETER- DILL'ON.

Witnesses:

FRED. W. COLMAN, JOHN W. BOLTON.

